Car is lifted on a hydraulic hoist.If the car is lifted x2 as high, how much more potential energy will it hav?
If h is the height through which it is lifted up ,its potential energy will increase by mgh. =========================
Balancing isn't comparable to shifting them F2/A2 = F1/A1, Or F2 = F1 ( A2/A1) If the section A2 is 10 situations extra advantageous thanA1 F2 = 10 F1 The mass of a classic elephant is 7000 kg for this reason to stability the elephant that is adequate if we persist with a rigidity of 7 hundred kg rigidity If we've made the ratio of the areas 1000 situations then to stability the elephant that is adequate if we persist with 7 kg rigidity .. ===================================== yet to advance the elephant throrugh some top we ought to equate the artwork executed artwork executed via the rigidity F1 = artwork executed via the rigidity F2 F1* x = F2 *y pondering the secone occasion the place F1 = 7 kg rigidity and F2 = 7000 kg rigidity 7 x = 7000 y x/y = 1000 If x = 1m = 1000 mm, y = 1mm If the 7 kg rigidity is pushed down by way of 1m , the elephant would be lifted up via a million mm ====================================== We cab tutor this in anothe way too. the quantity water displaced interior the samller section u tube is now occupied via greate section yet much less top A1 x = A2 y x =( A2/A1) y = 1000 y if y = a million mm x = 1000 mm = 1m ==========================
